//
//  server.cpp
//  api-server
//
//  Created by Peter Emil Jensen on 26/08/2012.
//  Copyright (c) 2012 Peter Emil Jensen. All rights reserved.
//

#include "server.h"
#include <boost/thread/thread.hpp>
#include <boost/bind.hpp>
#include <boost/shared_ptr.hpp>
#include <vector>

server::server(const std::string& address, const std::string& port, const std::size_t thread_pool_size) : thread_pool_size_(thread_pool_size), signals_(io_service_), acceptor_(io_service_), new_connection_()
{
    signals_.add(SIGINT);
    signals_.add(SIGTERM);
#if defined(SIGQUIT)
    signals_.add(SIGQUIT);
#endif
    signals_.async_wait(boost::bind(&server::handle_stop, this));
    
    boost::asio::ip::tcp::resolver resolver(io_service_);
    boost::asio::ip::tcp::resolver::query query(address, port);
    boost::asio::ip::tcp::endpoint endpoint = *resolver.resolve(query);
    acceptor_.open(endpoint.protocol());
    acceptor_.set_option(boost::asio::ip::tcp::acceptor::reuse_address(true));
    acceptor_.bind(endpoint);
    acceptor_.listen();
    
    start_accept();
}

void server::run()
{
    std::vector<boost::shared_ptr<boost::thread> > threads;
    for (std::size_t i = 0; i < thread_pool_size_; i++)
    {
        boost::shared_ptr<boost::thread> thread(new boost::thread(boost::bind(&boost::asio::io_service::run, &io_service_)));
        threads.push_back(thread);
    }
    
    for (std::size_t i = 0; i < threads.size(); i++)
        threads[i]->join();
}

void server::start_accept()
{
    new_connection_.reset(new connection(io_service_));
    acceptor_.async_accept(new_connection_->socket(), boost::bind(&server::handle_accept, this, boost::asio::placeholders::error));
}

void server::handle_accept(const boost::system::error_code& e)
{
    if (!e)
    {
        new_connection_->start();
    }
    
    start_accept();
}

void server::handle_stop()
{
    io_service_.stop();
}